Friction-coupling



(No Model.)

' R. CfBORCHERS.

FRIGTON COUPLING.

t No. 410,232.l

Patented Sept. 3, 1889.

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. To aZ/Z whom it may concern:

UNITED. STATES PATENT OFFICE.

- RICHARD C. BORCHERS, OF PHILADELPHIA, PENNSYLVANIA.

SPECIFICATION forming part of Letters Patent No. 410,232, datedSeptember 3, 189.

Application filed January 8, 18789. Serial No. 295,766. (No model.)

Be it known that I, RICHARD C. BoReHERs, of the city of Philadelphia and4State of Pennsylvania, have invented a neW'and usefulIlriction-Coi'lpling, of which the following` is a specification. p

My invention relates to that kind of e0upling whereby two 1shafts whilerevolving might be coupled or uneoupled at will, so that one of theshafts can be stopped while the other one keeps revolving.

In the accompanying drawings, which illustrate my new friction-coupling,Figure 1 is a vertical section of the entire coupling. Fig. 2 is a viewof the inner face of one-half of the coupling with the cover and sonneof the inner parts removed. Figs. 3 and 4 show views of some of theremoved parts.

Similar letters refer to similar parts throughout the several views.

The shaft G is supposed to be ihedriver and shaft I-I the driven one. Onthe reduced end of the shaft G is fastened with the key k a large hub B,which is cored out to lighten it, and which hask several V-shapedgrooves turned in its periphery, into which opposite to each other twoor more or less pairs of dogs d are fitted, which have cast on theirback a yoke d', into which the ends of the levers e lit, by which thesedogs d are either pressed tight intol the V-shaped grooves of the hub Bor are Witldrawn therefrom.

A is a hubbed plate fastened with the key 7c on the reduced end of theshaft II, but so 4that part of the reduced end of the shaft Il Willproject and enter the hub B in order to keep the two shafts in line whenthey are uncoupled. This plate A has four ribs cast on the inner face,which form four pockets opposite vto each other, into whichv the `dogs dare fitted and in which the levers e are fastened by the pins P. Theseribs have also four holes f', which are tapped out for the screws f, bywhich the cover C is fastened.

Dis a sliding sleeve, which is moved toward the plate A or away from itby the lever E, which is fastened `at o on the fulcrunistand F. Thesleeve D has opposite to each other four pairs of lugs cast onit,lbetween which the togglelinksm are held bythe pins c. Thesetoggle-links m have right-hand threads cut on theirV ends and enterhalf-way` into the nuts a, which have left-handthreads cut into theirother `half `to receive the ends of the toggle-links fn, which arefastenedin the ends of the leverse by the pins c. jam-nuts b are to lockthe nuts a after they have been adjusted. l

After thus describing the details` of my coupling, I will now explainhow it operates.`

`If the sleeve D is pushed with the lever'E against the hubbed plate A,the toggle-links m n. Will force the long ends of the levers e away fromthe shaft H,and turning around the pins P the short ends of these leverse will push the dogs d tight intothe Vshaped grooves of the hub B, thuscausing the hubbed plate A to revolve with the hub B, and if the slidingsleeve D is pushed in oppositedirec-` tion the dogs d will be pulled ontof the The grooves of the hub B, and the hubbed plate A'will standstill, while the hub B will keep` on revolving.

This coupling might also be used in eon- 75 l I neetion with a pulley oranyother revolving piece of machin ery by fastening the plate 'Af on theshaft/and the hub` B on the pulley or other piece of machinery which isloose on the shaft. 4 l 1 I claim as Iny invention and desire to Secureby Letters Patent-` t; l

The frietion-couplin g consisting of the hub B, adapted to be secured`to shaft G, saidhubV with yokes d', the adjustable toggle-links m y fn,and the sleeve D, all arranged to operate substantially as set forth.

Vlfitn esses:

A. E. SCHMIDT, A; E. ALREc-HT.

RICHARD o. IsioReHERs. Y

